12918521

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 17418240

約数和(自身を除く): 4499719

約数列:

[1, 7, 11, 17, 71, 77, 119, 139, 187, 497, 781, 973, 1207, 1309, 1529, 2363, 5467, 8449, 9869, 10703, 13277, 16541, 25993, 69083, 92939, 108559, 167773, 181951, 759913, 1174411, 1845503, 12918521]

約数ペア:

[(1, 12918521), (7, 1845503), (11, 1174411), (17, 759913), (71, 181951), (77, 167773), (119, 108559), (139, 92939), (187, 69083), (497, 25993), (781, 16541), (973, 13277), (1207, 10703), (1309, 9869), (1529, 8449), (2363, 5467)]